Abstcact

The bit_is_clear() is a macro that checks if the second argument-th bit of the first argument is 0.

Source Code

The bit_is_clear() is defined in hardware/tools/avr/avr/include/avr/sfr_defs.h as below.

1

#define bit_is_clear(sfr, bit) (!(_SFR_BYTE(sfr) & _BV(bit)))

It calculates the logical NOT after calculating the logical AND of _SFR_BYTE(str) and _BV(bit).

Version

7.3.0-atmel3.6.1-arduino7

Last Update

May 15, 2021